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Automatic doors are entrance systems designed
for pedestrian traffic in mostly commercial building applications,
include:

Sliding doors - single, bi-part and telescopic

Swinging doors - low energy or full pedestrian

Revolving doors - 2-, 3-, and 4-wing

Manual doors - ICU/CCU rooms

Bi-fold doors - 2- and 4-panel

SLIDING DOORS

Benefits
and considerations

Aesthetically clean

Good for two-way traffic

Retrofit and new construction

Breakaway options

Full breakout

All doors break out when pushed

Provides expanded egress

Large opening to move large equipment

Fixed sidelite

Only active leafs break out

Provides additional support

Active leafs slide on exterior, can be a problem in snowy
regions

Opening considerations

Single sliding doors - the walk through opening is offset

Bi-parts units - the walk through opening is centered

ApplicationsSurface applied applications are very popular in existing buildings.
They can be installed to the walls, and in most situations, they
can be easily installed to add a barrier. Not as aesthetically appealing
as overhead concealed, they do allow for a much larger walk-through
opening. And, they allow you to utilize wall space in lieu of sidelites.
In comparison, concealed are most popular in new construction and
remodelings.

VestibulesProper vestibule design helps to maintain temperature control.
The longer the vestibule the greater the chance the exterior door
will close before the interior door opens.

Vestibules are often an issue - bigger is better

Recommendation: at least 12 feet between doors

Most designers only have room for 7 to 9 feet

The time a door stays open cannot be reduced due to ANSI/BHMA
A156.10

SWINGING DOORS

Benefits
and considerations

Used to direct people to a specific part of a facility

Helps with loss prevention

Used for both new construction and retrofit

Opening and closing considerationsLow energy power operator requirements
only apply to swing door operators. The operator types are Power
Assist and Low Energy operators for pedestrian use. The activation
of all doors described in ANSI/BHMA A156.19 requires a "knowing
act" switch activation. Provisions are provided in this standard
to reduce chance of injury or entrapment without the use of guiderails,
safety devices, etc. ANSI/BHMA A156.19 gives more detailed speed
data incorporating door leaf width and weight with regards to speed
requirements of opening and closing speeds.

High energy power operator requirements deal
with higher speed, forces, shorter time delays, and activating sensing
devices as described in ANSI/BHMA A156.10. High energy power operators
require use of guiderails, safety devices, sensors, etc. ANSI/BHMA
A156.10 gives more detailed speed data with regards to speed requirements
of opening and closing speeds.

ApplicationsSwinging doors can be used in all types of applications, including: